Perhaps you should try some spelling variations:
"activity detection python python programming" » "activity prediction python python programming" (Expand search), "activity relation python python programming" (Expand search), "conductivity detection python python programming" (Expand search), "activity detection method python programming" (Expand search), "activity detection methods python programming" (Expand search), "activity detection actions python programming" (Expand search), "activity detection pythons python programming" (Expand search), "activity detection piton python programming" (Expand search), "activity detection pitons python programming" (Expand search)
"based convolution and coding program" » "based convolutional and coding program" (Expand search), "and convolution and coding program" (Expand search), "based evolution and coding program" (Expand search), "based revolution and coding program" (Expand search), "based convention and coding program" (Expand search), "based convolution and cloning program" (Expand search), "based convolution and loading program" (Expand search), "based convolution and cooling programs" (Expand search), "based convolution and coping program" (Expand search), "based convolution and cooling program" (Expand search), "based convolution and cooking program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based convolution and coding program\") OR (\"activity detection python python programming\"))~".
• Removing quotes may allow a broader search: (( based convolution and coding program ) OR ( activity detection python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based convolution and coding program") OR ("activity detection python python programming"))*.